Noun

(en noun)

(uncountable) The process or art of imparting knowledge, skill and judgment.

* {{quote-magazine, date=2013-07-19, author= Mark Tran

, volume=189, issue=6, page=1, magazine=(The Guardian Weekly) , title= Denied an education by war , passage=One particularly damaging, but often ignored, effect of conflict on education is the proliferation of attacks on schools

(countable) Facts, skills and ideas that have been learned, either formally or informally.

* {{quote-magazine, date=2013-06-07, author=(Joseph Stiglitz)

, volume=188, issue=26, page=19, magazine=(The Guardian Weekly) , title= Globalisation is about taxes too , passage=It is time the international community faced the reality: we have an unmanageable, unfair, distortionary global tax regime. […] It is the starving of the public sector which has been pivotal in America no longer being the land of opportunity – with a child's life prospects more dependent on the income and education of its parents than in other advanced countries.}}

Noun

(head)

Etiquette (always plural in this sense).